Verification of Optimization of Machining Process for Semi-Open Impeller Based on Siemens NX Platform

As the core component of high-performance mechanical transmission devices, semi-open impellers are widely used in aerospace, automobiles, and high-end industrial manufacturing. Their complex structures and variable blade shapes have extremely high requirements for machining accuracy and surface quality. However, at present, traditional manual programming for machining generally has problems of relatively low machining efficiency and machining accuracy. Therefore, we explored the application of the Siemens NX (UG NX12.0) software platform in modeling and process programming for machining semi-open impellers and designed an efficient machining strategy by combining rough machining, semi-finishing machining, and finishing machining in an optimized manner. By using the advanced functions of UG NX, the whole process from three-dimensional modeling and process planning to tool path generation was formulated, and machining verification was carried out on the Mikron Mill E500U five-axis machining center. The process plan significantly improved machining efficiency and optimized surface quality. After verification, the machining efficiency increased by more than 30%, and the machining accuracy was significantly improved, fully verifying the superiority and practicability of the UG NX platform in the machining of complex curved surface parts.